How would I go about doing this one:
Find XY if WX = 1/3(XY)
Hello, Mr.Jiggyfly!
Just substitute into the equation . . .
We have: .$\displaystyle \underbrace{WX}_{\downarrow} \;=\;\frac{1}{3}\underbrace{(XY)}_{\downarrow}$
. . . . . . . $\displaystyle x + 2 \;=\;\frac{1}{3}(5x + 2)$
Solve for $\displaystyle x$ . . . then evaluate $\displaystyle 5x+2$